构造函数属性.txt

using System;
public class Square 
{
private int sidelong;
	public Square()
	{
	Console.WriteLine ("我没有参数.");
	}
	public Square(int sidelong)
	{
	this.sidelong=sidelong;
	}
	public int Setsidelong(int sidelong)
	{
	    this.sidelong=sidelong;
		return sidelong;
	}
	public int Getsidelong(int sidelong)
	{
	return sidelong;
	}
	public void Print()
	{
	Console.WriteLine ("当前正方形的边长是：{0}",sidelong);
	}

}
class Square_Test
{
	public static void Main()
	{
	Square s1=new Square ();
		s1.Setsidelong (4);
		s1.Print ();
		Square s2=new Square ();
	}
}